Hello Everyone, I have a recipe for Green Celedon glaze cone 4-6 oxidation:
f 4 spar 38 whiting 14 zinc oxide 12 ball clay 6 flint 30
copper 0.5
My question is does anyone know what kind of copper this would be? I'm looking at my supply catalog and they list copper carbonate, copper oxide,black and copper oxide,red. I don't know which to get. Thank you for any help on this.
Red Deer